Clear dialog boxes

i am brand new to this non windows world, and am loving the crispness of manjaro. however fixing issues is something i have no clue how to do here. i checked the faqs, but i dont see my issue. when i try to install tor browser (as an example) i will get the first dialog box as normal. the second shows up clear and with what looks like checker board marks. ive updated everything to current. i dont know what to do next. pls help

toshiba satellite l355d-7825 all stock set up running gnome.

needing help here

Try with a different GTK theme.